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30/04/2026

FEATURE| Zinc Coating: The Most Cost-Effective Corrosion Protection for Steel Structures

This article contains engineering technical information on the selection of galvanized coatings for corrosion protection, covering the mechanisms, process comparisons, international standards, thickness testing methods, and selection recommendations based on environmental corrosion levels for hot-dip galvanizing and electro-galvanizing, for reference only.

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30/03/2026

FEATURE|Green Steel Buyers’ Guide: CBAM 2026, Carbon Costs & Low-Carbon Certifications Explained

This article primarily outlines the core framework and cost accounting logic of the CBAM 2026 policy, clarifies the essential differences between terms such as "green steel," "low-carbon emission steel," and "near-zero emission steel," and interprets the "hard currency" status of the EPD (Environmental Product Declaration) in international procurement. It aims to help international buyers see through the fog of "green labels" and make informed procurement decisions in the new era of green trade.

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03/03/2026

FEATURE| Complete Guide to Color Steel Tiles: Structure, Performance, and Comparison

This article comprehensively covers the definition, classification (single-layer panels and sandwich composite panels), model specifications and characteristics of various panel types, performance advantages, and fire safety precautions for color steel tiles (profiled steel sheets). Through a multi-dimensional comparison with colored stone tiles, it elucidates the fundamental differences between the two materials in terms of composition, performance, and applications.

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29/01/2026

FEATURE| Complete List and Selection Reference of Industrial Pipe Fittings

This article comprehensively explores the pivotal role of pipe fittings as the “joints” of piping systems. It provides a detailed explanation of their definition, common types and functions, performance characteristics of different materials, and selection criteria. Furthermore, it analyzes the current industry trends toward high-end, intelligent, and green development.

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29/12/2025

FEATURE| Steel Pipe Coating System Guide: Selection, Application to Delivery Practice

This article comprehensively outlines the importance, technical classification, inspection and transportation essentials, engineering selection methodology, and future trends of steel pipe coatings, serving as a complete technical guide for engineering projects.

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28/11/2025

FEATURE| Corrugated Steel Culvert: The Solution for Cost Reduction and Efficiency Improvement in Infrastructure Engineering

Using corrugated steel culverts instead of traditional concrete culverts for culvert construction offers unparalleled advantages in terms of construction time, cost, and environmental benefits. These trends collectively point to a safer, smarter, and more sustainable infrastructure future.

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02/12/2024

FEATURE| Main Shipping Routes for International Logistics Transportation

The routes of maritime transport are distributed between the oceans, which is also the advantage of maritime transport over other modes of transport. When choosing a route, the conditions of the cargo, ships, and ports must be considered, and a comprehensive assessment of the system organization must be made before a reasonable choice can be made.

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Short News

12/05 17:31

< Stainless Steel Welded Pipe, size: Φ108*4, grade: 316L(316L), brand: YOUFA. Tianjin - Gangrui increased by 14.46 tons

12/05 17:30

< Hot Rolled Patterned Coil, size: 3.75*1250*C, grade: H-Q235B(ASTM A36), brand: LAIGANG. Tianjin - Gangrui reduction by --18.28 tons

12/05 17:29

< Cold Rolled Stainless Steel Sheet, size: 1.0*1219*2438, grade: 316L/2B(316L/2B), brand: YONGJIN. Guangzhou - Yuefa increased by 47.66 tons

12/05 17:28

< Rebar, size: Φ20, grade: HRB400E(ASTM A615 Grade 60), brand: SHAGANG. Shanghai - Caoan reduction by --100.72 tons

12/05 17:28

< Bridge Steel Plate, size: 12-30, grade: Q345qD(ASTM A709 Grade 50), brand: ANGANG. Tianjin - Gangrui reduction by --36.17 tons

12/05 17:26

< Welded Steel Pipe, size: DN80(3"*3.75mm), grade: Q215(ASTM A283 Gr.C), brand: YOUFA. Tianjin - Gangrui reduction by --34.93 tons

Answers

What are the commonly used mesh sizes for rebar mesh?
Rebar mesh is a robust reinforcing mesh structure formed by welded links of rebars. Common mesh sizes include: Type A: 20mm*20mm, Type B: 10mm*20mm, Type C: 15mm*20mm, Type D: 10mm*10mm, Type E: 15mm*15mm, and Type F: 10mm*15mm. The diameter of the rebar mesh is typically 4-14mm. The maximum width is 2.4 meters, and the maximum length is 12 meters.
The calculation formula is: Weight of rebar = Length of rebar * Specific gravity of rebar. Therefore, reinforcing mesh can be used to calculate the weight of rebars. The total length of rebars with different diameters multiplied by their respective specific gravity gives the total weight of the rebars, which is actually the theoretical weight.
What are the applications of tinplate products?
Tinplate (tin-plated steel) is primarily used in food and beverage packaging, such as cans, milk powder tins, and beverage bottle caps. It is also widely used in industrial containers for chemicals, paints, and aerosols, as well as in hardware and electronic products such as battery casings and electronic components. In addition, it is commonly used in gift boxes, tea tins, toys, and other daily necessities.
What are fixed length and random length. If I need 12-meter steel pipes, can you guarantee the exact length?
Fixed Length: This refers to production or cutting to a fixed length as required by the buyer's contract. For example, if you need 12 meters, the steel mill will roll or cut to the target length of 12 meters.
Random length: This refers to the natural length produced by the steel mill based on maximizing production efficiency (e.g., randomly between 6 and 12 meters), without a commitment to a specific size.

We can guarantee the length of the steel pipes, but the definition of "full length" needs to be clearly stated in the contract. Length tolerances must be agreed upon. because hot cutting and cooling shrinkage can introduce minute errors. Before shipment, we will conduct a re-inspection according to the sampling ratio specified in the contract, including key dimensions such as length, wall thickness, and outer diameter, ensuring that only qualified products are loaded.
To avoid disputes, we recommend clearly stating in the contract: "Length 12 meters, execution standard, and tolerances." Through self-operated or regulated procurement via the CSMC platform, conduct sampling inspections according to standards before shipment to ensure that the length of each steel pipe conforms to the agreement.


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